Machine



Mddeli) I 2 Sheets-Sheet 1.

W. L. HAYES 81; L. W. JERNBERG;

WIRE DRAWING MACHINE.

Patented Nov. 5, 1895.

Att'y.

MID?

AN DREW BGRAHAM. PHOTO-Lm-IQ WASH NGTON, ac.

' (No Model.) 2 Sheets-Shet 2.

W. L.' HAYES & L. w; JERNBERG.- WIRE DRAWING MACHINE.

No. 549,452. Patented Nov. 1895.

WITNESSES: INVENTORS AN DREW BJERAKAM. FHOTO-UThQWASHXNGTDN, 0 G,

UNITED STATES I PATENT Erica.

IVILL L. HAYES AND LAWRENCE \V. JERNBERG, OF CLEVELAND, OHIO; SAIDJERNBERG ASSIGNOR TO SAID HAYES.

WIRE-DRAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 549,452, dated November5, 1895.

' Applioationfilediebruary Z6, l895,- Serial No. 539,720. (No model.)

To all whom it may concern.-

Be it known that we, WILL L. HAYES and LAWRENCE W. J ERNBERG, citizensof the ful Improvements in Wire-Drawing Machines, of which improvementsthe following is a specification.

The invention described herein relates to certain improvements inapparatus for drawing wires, and has for its object the employment ofmeans whereby the preliminary movement of a coil of wire may becontinuous, similar to that imparted by the pulling-drum.

It has heretofore been the practice in beginning the drawing operationto reduce one end of the wire, so that it will easily pass through thedie a suificient distance to permit of its being grasped by grippers,which are usually attached to one end of a lever operated by aneccentric on the shaft of. each winding-drum. The throw of thiseccentric is so small that the grippers must be released and a new griptaken on the wire to pull a further length through the die, and thisoperation must be repeated five or six times be fore a sufficient lengthhas been drawn through to permit of the wire being attached to the drum.This operation is not only slow, but the grippers injure the wirewherever grasped, so that a considerable portion of each coil is wasted.

In general terms the invention consists in the construction andcombination substantially as hereinafter more fully described andclaimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a view in side elevation of a drawing-bench having ourimprovements applied thereto. Fig. 2 is a top plan view of the same.Fig. 3 is an end elevation. Figs. 4 and 5 are detail views on anenlarged scale of the draw-chain and wire-gripping mechanism, and Fig. 6is a transverse section of the housing for the chain.

In the practice of our invention it is preferred to arrange a series oftwo, three, or more winding or drawing drums land their operatingmechanisms in line or on one bench, as it is termed. These drums areloosely mounted on the upper ends of continuously-rotating verticalshafts 2, with which they are adapted to be interlocked by clutchmechanisms 3, one member thereof being attached to the under sides ofthe drums and the other members to the vertical shafts. Yokes 4 aremovably mounted below the drums which they support, when raised by thelevers 5, at such a height that the members of the clutch mechanism willnot engage. To facilitate the rotation of the drums when raised and toprevent excessive friction between the ends of the yokes and the undersides of the drums while the latter are being lifted to effect thedisengagement of the parts of the clutch mechanism, rollers 6 aremounted on the ends of the yoke. A die-holder 7 is pivotally secured tothe bench in suitable proximity to the first drum of the series, but, ifdesired, a similar holder for each drum may be employed.

In order to effect the intial step in the drawing operation-4;. 6., thepulling of a sufficient length of wire through the die to permit of theattachment of the end of the wire to one of the drums-a chain providedwith suitable means for connection with the grippers is passed aroundwheels 8 and 9, mounted on the ends of shafts projecting from the frontof the bench. One of these shafts is positively driven bysuitably-arranged mechanism, and the other shaft is mounted inadjustable bearings in order that the chain may be brought to thenecessary tension. Our preferred form of chain 10 consists of linksprovided with knobs at one end, as clearly shown in Figs. 4 and 5. Eachof the links consists of two side bars 11, provided at one end withlateral bosses or projections 12 and 13, the outer bosses 13 beingadapted to prevent any twisting of the chain by engagement with lateralrecesses in the guide-trough 14. of the chain-housing. It is preferredto mount antifriction-rollers 15 on the bosses 13 to facilitate themovement of the chain along the guide-trough. The internal bosses orconnecting-pins 12 serve as bearings for the eyes 16, formed at theopposite end of the side bars of the links. On one side of the eyes 16are formed projections or knobs 17, to which the gripping mechanism isattached. The sections of the links are held together by means of pins18 passing through the bosses, and it is preferred to secure to twosections of knobs 17 by rivets, as shown in Fig. 5.

The handles of the grippers 19 are connected by links 20 to aswivel-ring 2i conneeted to the strap 22. Between the side bars of thestrap is pivoted a pawl 23, having one side of its lower end adapted tofit in the slight recesses in the sides of the knobs 17, as shown inFig. 5. The upper end of the pawl 23 is curved, so as to overhang thedog 24, which is also pivoted between the sides of the strap in suchrelation to the pawl that when the dog is shifted by its lever or handle25, so that one end thereof will bear against one side of the knob, itsopposite end will be in position to support the overhanging end of thepawl, thereby preventing any movement of the pawl whose lower end is inengagement with one side of the knob, as shown in Fig. 5. In order toprevent any accidental displacement of the dog, a slight recess isformed in the pawl for the reception of the upper end of the dog.

The chain-housing, which extends the entire length of the bench, isformed with a trough along which the upper portion of the chain passesand with a curved supporting ledge 26 below the trough for the returningportion of the chain. The trough is made of such adepth that the knobswill not project above its upper surface,as shown in Fig. 1.

\Ve claim herein as our invention- 1. In a machine for drawing rods,wire, &c., the combination of an endless chain provided with knobs, wiregrippers, a strap connected to the grippers, a pawl pivoted to the strapand adapted to engage one of the knobs on the chain, and a dog forlocking the pawl in such engagement,substantial ly as set forth.

2. A chain for a machine for drawing rods, wire, &c., each link thereofconsisting of a pair of side bars each provided at one end withinternally projecting bosses, and at the opposite end with an eye,adapted to receive the bosses of the adjacent link, the eyes beingprovided with an external knob or projeetion, substantially as setforth.

3. A chain for a machine for drawing rods, wire, &c., each link thereofconsisting of a pair of side bars, each provided with external andinternal bosses at one end and at the opposite end with an eye adaptedto receive the bosses of the adjacent link, said eyes being providedwith an external knob or projection, in combination with a guide troughprovided with lateral recesses for the reception of the cxternals on thelinks, substantially as set forth.

In testimony whereof we havehereunto set our hands.

WILL L. HAYES. LA\VRENCE \V. JERNBERG.

\Vitnesses:

THOMAS L. HOPKINS, WILL C. MARTIN.

